Provided is an electronic device configured to be charged with an adapter. The electronic device includes an energy storage unit, a charging unit and a switch unit. The charging unit is configured to receive a bus voltage and output a charging voltage to charge the energy storage unit. The switch unit is electrically coupled in parallel to the charging unit. When the electronic device is coupled to the adapter through a bus interface, the electronic device receives the bus voltage from the adapter, receives a communication signal from the adapter, and selectively turns on or off the switch unit according to the communication signal, and when the electronic device operates in a direct charging mode, the switch unit is turned on to form a direct charging path, to charge the energy storage unit by using the bus voltage.

Provided is an electronic device configured to be charged with an adapter. The electronic device includes an energy storage unit, a charging unit and a switch unit. The charging unit is configured to receive a bus voltage and output a charging voltage to charge the energy storage unit. The switch unit is electrically coupled in parallel to the charging unit. When the electronic device is coupled to the adapter through a bus interface, the electronic device receives the bus voltage from the adapter, receives a communication signal from the adapter, and selectively turns on or off the switch unit according to the communication signal, and when the electronic device operates in a direct charging mode, the switch unit is turned on to form a direct charging path, to charge the energy storage unit by using the bus voltage.

A pulse charging for a battery includes multi-stage voltage conversion. At first stage, an input voltage from a power supply is divided into a plurality of intermediate voltages. At second stage, one or more of the plurality of intermediate voltage are further down converted to generate one or more portions of a charging pulse to be applied to the battery. The down conversion of the input voltage to the output voltage is accompanied by increase in charging current that is applied to the battery. The higher charging current applied to the battery results in fast charging of the battery. Also, the described multi-stage voltage conversion circuitry has high efficiency which alleviates problem of heat dissipation associated with the voltage conversion for charging of the battery.

An electronic device, a power factor correction filter, and an electronic device are provided. The electronic device includes at least one first inductor, a second inductor, a first comparator circuit, a second comparator circuit, a first reference signal generator, and a second reference signal generator. The first inductor and the second inductor are coupled inductors. The first/second comparator circuit is coupled at a first input to a first/second actuating element, at a second input to the first/second reference signal generator, and at an output to a first/second control circuit. The first/second control circuit is coupled to the first/second inductor in order to output a first/second current signal to the first/second inductor. The first and second reference signals are generated such that the two reference signals differ from each other with respect to time, in order to reduce a deviation from a predefined phase shift between the first current signal and the second current signal.

An electronic device, a power factor correction filter, and an electronic device are provided. The electronic device includes at least one first inductor, a second inductor, a first comparator circuit, a second comparator circuit, a first reference signal generator, and a second reference signal generator. The first inductor and the second inductor are coupled inductors. The first/second comparator circuit is coupled at a first input to a first/second actuating element, at a second input to the first/second reference signal generator, and at an output to a first/second control circuit. The first/second control circuit is coupled to the first/second inductor in order to output a first/second current signal to the first/second inductor. The first and second reference signals are generated such that the two reference signals differ from each other with respect to time, in order to reduce a deviation from a predefined phase shift between the first current signal and the second current signal.

A regulator rectifier device and a method for regulating an output voltage of the same which takes input from three phase alternating current voltage generating device with each phase including a positive cycle and a negative cycle. A first rectifying unit with a first gate terminal, connected to the generating device to rectify the positive cycle of said three phase alternating current voltage. A second rectifying unit with a second gate terminal, connected to said generating device to rectify the negative cycle of said three phase alternating current voltage, wherein said second rectifying unit switches between rectification mode and shunt mode depending on the load condition. And a controlling unit configured to control said second rectifying unit by a gate control signal, said controlling unit outputs said gate control signal based on an output voltage of said regulator rectifier device with respect to a first predefined voltage in battery connected condition or third predefined voltage in battery-less condition and said positive cycle and said negative cycle of each phase of said three phase alternating current voltage from said generating device, said gate control signal enables said second rectifying unit to switch between rectification mode and shunt mode by controlling the second gate terminal of said second rectifying unit, wherein said gate control signal switches said second rectifying unit into shunt mode when the output voltage of said regulator rectifier device is greater than said first predefined voltage in battery connected condition or third predefined voltage in battery-less condition and thereby continuing the shunting of said second rectifying unit as long as said positive cycle of corresponding phase of said three phase alternating current voltage exists.

A regulator rectifier device and a method for regulating an output voltage of the same which takes input from three phase alternating current voltage generating device with each phase including a positive cycle and a negative cycle. A first rectifying unit with a first gate terminal, connected to the generating device to rectify the positive cycle of said three phase alternating current voltage. A second rectifying unit with a second gate terminal, connected to said generating device to rectify the negative cycle of said three phase alternating current voltage, wherein said second rectifying unit switches between rectification mode and shunt mode depending on the load condition. And a controlling unit configured to control said second rectifying unit by a gate control signal, said controlling unit outputs said gate control signal based on an output voltage of said regulator rectifier device with respect to a first predefined voltage in battery connected condition or third predefined voltage in battery-less condition and said positive cycle and said negative cycle of each phase of said three phase alternating current voltage from said generating device, said gate control signal enables said second rectifying unit to switch between rectification mode and shunt mode by controlling the second gate terminal of said second rectifying unit, wherein said gate control signal switches said second rectifying unit into shunt mode when the output voltage of said regulator rectifier device is greater than said first predefined voltage in battery connected condition or third predefined voltage in battery-less condition and thereby continuing the shunting of said second rectifying unit as long as said positive cycle of corresponding phase of said three phase alternating current voltage exists.

A DC-DC converter including a bridge circuit unit electrically connected to a DC link capacitor and comprising at least one full bridge circuit comprising switching elements; a sensing unit for sensing a voltage between the bridge circuit unit and the DC link capacitor; and a control unit for controlling the bridge circuit unit according to the sensed voltage, wherein a power of one end of a battery is controlled to a droop curve-shaped power value according to the sensed voltage, wherein the DC-DC converter further comprises an inductor and a capacitor electrically connected to the bridge circuit unit, the inductor is connected to one end of a battery, the capacitor is connected to one end of the battery and a node on the other end of the battery, and the node is connected to and arranged between the inductor and the battery.

A DC-DC converter including a bridge circuit unit electrically connected to a DC link capacitor and comprising at least one full bridge circuit comprising switching elements; a sensing unit for sensing a voltage between the bridge circuit unit and the DC link capacitor; and a control unit for controlling the bridge circuit unit according to the sensed voltage, wherein a power of one end of a battery is controlled to a droop curve-shaped power value according to the sensed voltage, wherein the DC-DC converter further comprises an inductor and a capacitor electrically connected to the bridge circuit unit, the inductor is connected to one end of a battery, the capacitor is connected to one end of the battery and a node on the other end of the battery, and the node is connected to and arranged between the inductor and the battery.

A charging apparatus that can perform a charging action based on an initial capacity of a battery and a charging method of the charging apparatus are provided. The charging apparatus estimates the initial capacity of the battery, calculates an amount of a charging current according to the initial capacity of the battery, and provides the calculated amount of the charging current corresponding to the initial capacity of the battery.